Tungsten wire material: w1,w2,w-r Wire Gauge:0.05-2.0mm density: 19.3g/cm3 Surface: black / bright Tungsten wire Tungsten wire is supplied in black, as drawn condition, where drawing lubricants and oxides are retained on the surface or in the cleaned condition by firing in hydrogen or electrochemical etching.Tungsten wire is spooled on clean, defect free spools. For very large diameters, Tungsten ...